Fluorescent Brightener 28 CAS 4404-43-7

什么是荧光灯的光亮剂28CAS4404-43-7？

Fluorescent Brightener 28 CAS 4404-43-7 （CAS 4193-55-9）is a high-efficiency, bis-triazinylaminostilbene-based optical brightening agent (OBA). It absorbs ultraviolet light (300-400 nm) and re-emits it as intense blue-violet fluorescence (400-500 nm), effectively masking the inherent yellowness of substrates and producing a bright, visually white appearance. Fluorescent Brightener 28 is particularly valued in polymer and coating applications for its excellent thermal stability and compatibility.

FLUORE％BRIGTENER28淡黄色粉末、无臭、溶性在烷烃、脂肪、矿物油、石蜡、和大多数有机溶剂。 最大值吸收光谱375mm(乙醇)，并最大发射波长是435nm(在乙醇)。

规格

应用

(1) Plastics Industry: Fluorescent Brightener 28 CAS 4193-55-9 widely used as a whitening agent for thermoplastics such as PVC, PP, PE, ABS, PS, and engineering plastics to enhance brightness and whiteness.
(2) Coatings & Paints: An effective brightener for architectural paints, industrial coatings, automotive finishes, and UV-curable systems.
(3) Synthetic Fibers: Fluorescent Brightener 28 CAS 4193-55-9 used in the spin finishing or mass pigmentation of polyester, nylon, and acetate fibers to achieve brilliant whiteness.
(4) Inks & Masterbatches: Key additive in specialty printing inks and white masterbatches for consistent whitening performance.
(5) Paper & Detergents: Fluorescent Brightener 28 CAS 4193-55-9 applied in high-quality paper coating and as an optical brightener in some industrial detergent formulations.

功能

(1) High Whitening Efficiency: Provides intense blue-white fluorescence with low addition levels (typically 0.01%-0.1%).

(2) Excellent Thermal Stability: Withstands typical polymer processing temperatures up to 250-300°C without significant degradation.

(3) Good Light Fastness: Offers reasonable resistance to fading under long-term UV exposure.

(4) Broad Polymer Compatibility: Compatible with a wide range of polymer matrices and resin systems.

(5) Easy to Disperse: Can be readily incorporated into polymers via melt compounding or into liquid systems via high-speed dispersion.

包装

通常装在25公斤/桶，并且还可以做的定制软件包。